The tigers _____ from _____.[ ] A. come, 发布时间:2017-07-06 19:36 │ 来源:www.tikuol.com 题型:选择题 问题: The tigers _____ from _____ .[ ]A. come, AsiaB. are coming, AsiaC. comes, Asian
题型:选择题 在25 ℃、101 kPa下,1 g甲醇(CH3OH)燃烧生成CO2和液态水时放热22.68 kJ。下列热化学方程式正确的是A.CH3OH(l)+3/2O2(g)===CO2(g)+2H2O(l)ΔH=+725.8 kJ·mol-1B.2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l)ΔH=-1452 kJ·mol-1C.2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l)ΔH=-725.8 kJ·mol-1D.2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l)ΔH=+1452 kJ·mol-1 查看答案